Teachable? Meaning- just look at a map and never mind a photograph? Facing away from the sun? The person in the Altgens photo-- on the front steps apparently shielding his eyes with both hands [between Lovelady and the SS agents on the right side of their car].. is not looking at the motorcade?
Maybe he had his hands up earlier when the limousine went by and figured he'll turn back and see who else was in the motorcade. So he left his hands in place for the hell of it. Maybe the sun felt good on his forearms.
The shadow from the running man illustrates the direction of the sun ...directly towards the suspected window--
Wrong. The sun doesn't shine directly up Elm Street until about 2:30.
The picture above was taken just after the shooting, and the shadows project across Elm, not up Elm and into the SN windows.
If the sun was shining straight up Elm and into the SN, wouldn't the shadow on the limousine be projecting backwards from Altgens? Instead the car's shadow projects across Elm.
Just picture after picture of shadows projecting across Elm at about the time of the shooting.